symfony/symfony — pull request #9133 by bschussek (2013-09-26 09:11:29+00:00)
Title: [Validator] Simplified usage of the Callback constraint

| Q | A
| ------------- | ---
| Bug fix? | no
| New feature? | yes
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | fixes #2480, replaces #3939
| License | MIT
| Doc PR | TODO